NASA has now formally started to pack its bags for the next big discovery mission, this time heading to Jupiter’s icy moon Europa. Last month NASA announced the instruments that will fly on this trip and…

With geysers bursting through an icy crust, Enceladus is a tiny moon with a big personality.
Hsiang-Wen Hsu et al/NatureMarch 11, 2015

The icy moon Europa is perhaps the most tantalising destination in our solar system. Scientists have been trying for years to kickstart a mission to Jupiter’s most enigmatic moon, with very Earth-like…